Lifting-jack.



FLEQL @9i/immo@ s. D. MOMAHON. LIPTING JACK.

PATENTBD DB0. a, '1907.v

APPLIOATION FILED JUNE 20. 1907,.

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STEPHEN PE/rsks ca., vusmncron, n. c,

DMEMAHUN STEPHEN DVMGMAHON, OF GENOA TOWNSHIP, DELAWARE COUNTY, OHIO.

LrFTING-JACK.

Specification of `Letters Patent.

Patented Dec. 3, 1907.

yApplication filed .Tune 20. 1907. Serial No. 379.948.

, T o all whom it may concern:

Be it known that I, STEPHEN D. MoMA- HoN, a citizen of the United States, residing in Genoa township, in the county of Delaware and State of- Ohio, have invented certain new and useful Improvements in Lifting- Jacks; and I do declare the following to be a full, clear, andeXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation to new and useful improvements in lifting jacks and it is especially designed to be used in connection with carriages or other vehicles.

The object of the invention is the production of a simple, economical and efficiently operating device of this character by means of which the front or rear aXle of a carriage or other vehicle may be raised for any reason.

In the accompanying drawings, Figure l is a side elevation of my invention, the lifting lever in its lowest position; Fig. 2 is a side elevation of my invention, the lifting lever partly raised and Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 2.

Referring now more particularly to the drawings, the numeral 1 represents a standard provided at its lower end with a suitable base 2.

The numeral 3 represents two corresponding horizontal adjusting members preferably in the form of elongated plates or straps that work on opposite sides of said standard and are connected by transverse engaging pins 4 which are located a suitable distance outward of the oppositeA edges of said standard when said lifting block is in its lowest position. A lifting lever 5 is fulcrumed at its inner end between and near the front ends of said adjusting member 3 by suitable means and is connected at its inner end at a suitable distance outward of its fulcrum point by two`corresponding elongated connecting straps or links 6 to opposite sides of a lifting block 7, secured between the sides and near the ends of a U-shaped strap or member 8. In the operation lof my invention, said lifting block is placed under the axle of the carriage or vehicle or any other object sought to be raised and the free end of the lifting lever 5 swung upward, causing said lifting block to move upward.

In the application of my invention, said adjusting members 3 may be moved up or down on the standard to cause the lifting block to engage the object to be raised.

It will be obvious that the amount of play l of the lifting block after the adjusting members have been adjusted in the proper position may be regulated by having'the proper distance between the fulcrum point of the lifting block and the connecting rneans'for the lower ends of said connecting straps or links 6. l

Having thus described my invention, what I claim as new isz- A lifting jack, as described, comprising a standard, 4opposed adjusting bars arranged laterally of said standard, said adjusting bars having connecting pins effective to engage or impinge upon opposite edges of said standard, a lifting lever, fulcrumed between said adjusting bars, a stirrup slidable upon said standard and equipped with a bearing member arranged upon the forward side of said standard, and link-bars extending obliquely and laterally of said standard, with their lower forward ends pivoted to said stirrup and their upper rear ends pivotally connected to said lifting lever, beyond said adjusting bars.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

STEPHEN D. MoMAI-ION.

Witnesses: v

JUSTIN T. IRWIN, BERT D. SHAW. 

